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Real time compression v7000
1.
Lab Validation
Report IBM Storwize V7000 Disk System Enterprise-‐class Function in a Midrange Storage Package By Vinny Choinski, Senior Analyst, with Kerry Dolan, Research Analyst August 2012 © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
2.
Lab Validation: IBM
Storwize V7000 Disk System 2 Contents Introduction ................................................................................................................................................ 3 Background .............................................................................................................................................................. 3 IBM Storwize V7000 ................................................................................................................................................. 4 ESG Lab Validation ...................................................................................................................................... 6 Ease of Use ............................................................................................................................................................... 6 Efficient Data Management ..................................................................................................................................... 9 Powerful Enterprise-‐class Features ........................................................................................................................ 14 Predictably Scalable Performance .......................................................................................................................... 17 Real-‐time Compression .......................................................................................................................................... 21 Storwize V7000 Unified: Integrated Block and File Storage with Consolidated Management .............................. 25 ESG Lab Validation Highlights .................................................................................................................... 29 Issues to Consider ..................................................................................................................................... 29 The Bigger Truth ........................................................................................................................................ 30 Appendix ................................................................................................................................................... 31 ESG Lab Reports The goal of ESG Lab reports is to educate IT professionals about emerging technologies and products in the storage, data management and information security industries. ESG Lab reports are not meant to replace the evaluation process that should be conducted before making purchasing decisions, but rather to provide insight into these emerging technologies. Our objective is to go over some of the more valuable feature/functions of products, show how they can be used to solve real customer problems and identify any areas needing improvement. ESG Lab’s expert third-‐party perspective is based on its own hands-‐on testing as well as on interviews with customers who use these products in production environments. Although this report may utilize publicly available material from various vendors, including IBM, it does not necessarily reflect the positions of such vendors on the issues addressed in this report. This ESG Lab report was developed with IBM funding. All trademark names are property of their respective companies. Information contained in this publication has been obtained by sources The Enterprise Strategy Group (ESG) considers to be reliable but is not warranted by ESG. This publication may contain opinions of ESG, which are subject to change from time to time. This publication is copyrighted by The Enterprise Strategy Group, Inc. Any reproduction or redistribution of this publication, in whole or in part, whether in hard-‐copy format, electronically, or otherwise to persons not authorized to receive it, without the express consent of The Enterprise Strategy Group, Inc., is in violation of U.S. copyright law and will be subject to an action for civil damages and, if applicable, criminal prosecution. Should you have any questions, please contact ESG Client Relations at (508) 482.0188. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
3.
Lab Validation: IBM
Storwize V7000 Disk System 3 Introduction This report documents the results of ESG Lab hands-‐on testing of the IBM Storwize V7000 Midrange Disk System. It focuses on the powerful enterprise-‐class features and functionality offered by the platform, including heterogeneous storage virtualization, thin provisioning, data mobility, and capacity-‐efficient point-‐in-‐time snapshots. Testing was designed to confirm IBM’s claims that the V7000 has built-‐in efficiency with exceptional ease of use and performance. The original testing took place in Tucson, Arizona, in early 2011. Additional testing completed in Gaithersburg, Maryland, in May 2012 was focused on two new features: real-‐time compression for block workloads and unified storage capability. Background ESG conducted an in-‐depth survey of senior IT professionals concerning their organizations’ IT spending plans and priorities for 2012. Survey participants represented midmarket (100 to 999 employees) and enterprise-‐class (1,000 employees or more) organizations in North America and Western Europe. The top-‐ten IT priorities reported by respondents are shown in Figure 1. Priorities were fairly evenly distributed, with every listed priority getting at least one response. The top-‐two priorities reported by respondent organizations related to increasing the use of server virtualization and improving data backup and recovery.1 Figure 1. Top-‐ten IT Priorities Which of the following would you consider to be your organizaFon's most important IT prioriFes over the next 12-‐18 months? (Percent of respondents, N=614, ten responses accepted) Increased use of server virtualizafon 30% Improve data backup and recovery 30% Major applicafon deployments or upgrades 29% Manage data growth 27% Informafon security inifafves 27% Business confnuity/disaster recovery programs 25% Data center consolidafon 24% Desktop virtualizafon 23% Mobile workforce enablement 22% Deploying a "private cloud" infrastructure 22% 0% 5% 10% 15% 20% 25% 30% 35% Source: Enterprise Strategy Group, 2012. In another recent research study, ESG found that server virtualization is becoming ubiquitous in IT organizations of all sizes. Of 1,602 survey respondents, nearly three-‐quarters (74%) said their organization currently uses server virtualization. An additional 19% of organizations are in the evaluation or planning phase, leaving just 7% of the midmarket and enterprise organizations surveyed by ESG not currently using server virtualization and having no plans to do so.2 1 Source: ESG Research Report, 2012 IT Spending Intentions Survey, January 2012. 2 Source: ESG Research Report, The Evolution of Server Virtualization, November 2010. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 4 IT professionals who have experience with server virtualization know that storage virtualization also enables consolidation, which reduces complexity and cost. Storage and server virtualization are also similar in their ability to provide increased availability, fault tolerance, and mobility. Given the similarities, it’s not surprising that, in an earlier study, ESG learned that an increasing number of organizations are deploying server and storage virtualization together. Fifty-‐seven percent had either already deployed storage virtualization in conjunction with server virtualization or planned on doing so within the next 24 months at the time of that survey.3 One of the most significant findings involved the substantial economic benefit of deploying an intelligent storage virtualization solution in conjunction with server virtualization. As an example, 79% of early adopters with a large SAN believe they have reduced their annual storage hardware spending to some degree, with a reported mean annual savings of 19.7%. Storage hardware savings were the most significant due to the ability to reclaim and reuse existing storage (the least expensive storage is the storage you already have). Consolidating storage software that previously ran on multiple servers or storage systems onto a centrally managed infrastructure also helped reduce storage software spending and storage administration costs. IBM Storwize V7000 The IBM Storwize V7000 is a midrange disk system designed to be easy to use and manage, enabling rapid deployment with minimal resources. Storwize V7000 is virtual storage that offers efficiency and flexibility through built-‐in SSD optimization and thin provisioning technologies while enabling users to virtualize and reuse existing disk systems (see Figure 2). A unified storage option is available for combined block and file workloads. Figure 2. The IBM Storwize V7000 Midrange Disk System 3 Source: ESG Research Report, The Impact of Server Virtualization on Storage, December 2007, N=332. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 5 Storwize V7000 advanced functionality also enables non-‐disruptive migration of data from existing storage, simplifying implementation and minimizing disruption to users. IBM Storwize V7000 can be deployed in a data center to provide: • Dramatic performance improvement with IBM System Storage Easy Tier functionality, providing automatic storage tiering between hard disk drives and solid-‐state drives (SSDs). • Optimized capacity utilization and availability. • V7000 Unified option for consolidated block and file storage. • Significantly improved storage-‐management ease of use, including consolidated management for block and file storage. • Fully integrated real-‐time compression of active primary block workloads. • A centralized platform for the management of SAN-‐ and NAS-‐attached storage capacity. • Heterogeneous interoperability between a wide variety of hosts, operating systems, and storage systems. • Online data migration services. • Remote replication and disaster avoidance services. • Space-‐efficient provisioning and copy services. Storwize V7000 may be used to provide all these functions to enhance existing installed storage or as part of a new storage deployment. The goal of ESG Lab’s testing of the IBM Storwize V7000 was to validate enterprise-‐class features and functionality including ease of use, non-‐disruptive virtualization, automated tiering, data mobility, copy services, real-‐time compression, and unified SAN/NAS capability. Lab experts also explored the performance benefits of IBM System Storage Easy Tier and local Active Cloud Engine for file data. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 6 ESG Lab Validation ESG Lab performed hands-‐on evaluation and testing of the IBM Storwize V7000 at an IBM facility in Tucson, Arizona. SAN-‐attached IBM 3850-‐X5 servers were used during testing (shown in Figure 3 and documented in the Appendix). An IBM DS4800 storage array was used to validate the ability to virtualize and manage external storage. Figure 3. IBM Storwize V7000 Test Bed Ease of Use ESG Lab testing began with a high-‐level examination of the Storwize V7000 user interface. The Storwize V7000 graphical user interface is a browser-‐based, easy-‐to-‐navigate, intuitive GUI. The home screen (see Figure 4) provides an excellent graphical flow chart of the system components and steps required to provision storage to host systems. The “Getting Started” view also provides e-‐learning and information center links that can be leveraged to provide detailed information on each component in the storage provisioning process. Figure 4. Getting Started GUI View © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 7 ESG Lab Testing ESG Lab leveraged the “Getting Started” view to confirm physical system components and resources and to configure more advanced system features. The flow diagram and component detail information was repeatedly referenced during the configuration of many storage components, from managed disks, pool, and volume creation, to host provisioning and external device imports. The Storwize V7000 GUI provides an intuitive view of the system components organized on the left side of each pane in column format, allowing the administrator to scroll from component to component with ease. Hovering over an individual component provides drilldown options for the administrative tasks that can be performed for that component. Figure 5 shows the administration options available for the Storwize V7000 volumes. Figure 5. Volume Administration View Notably, the middle of the screen displays system status information—a high-‐level yet detailed view of system information moving from left to right. Figure 5 displays the physical view of system capacity via the bar on the left and a component view in the middle of the pane. From the system status screen, users can hover over each object and display detailed system information. The blue bar displays capacity used, and the black portion shows the system’s total physical capacity. A click on the link below the physical display presents a table of system statistics to the right. Alternatively, users can click on a disk shelf to display detailed information on the drives in each enclosure. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 8 The Storwize V7000 disk system presents storage as volumes. Volumes are virtual containers, abstracted from physical disk drives by the concepts of managed disks and pools presented to host servers. The Volumes by Pool view allows the administrator to see detailed information for each Storwize V7000 volume, including its pool association. Figure 6 shows the volume details and administration options available for volumes in Pool WEB-‐SP. Figure 6. Volumes by Pool View ESG Lab Testing ESG Lab validated the ease of executing typical storage administration tasks with the Storwize V7000 by creating a thin provisioned volume copy in an existing storage pool. Figure 6 shows the volume-‐copy-‐creation steps as well as the percentage completed. Volume copies can be assigned to hosts and used for a number of operations (e.g., off-‐ host backups, test/dev, or data migrations). Why This Matters ESG Lab found that getting started with the Storwize V7000 disk system was intuitive and straightforward. The user interface provided a high-‐level flowchart diagram clearly describing the storage provisioning process. Common administration tasks were wizard-‐driven with easy to follow, step-‐by-‐step setup and configuration instructions. Included in the user interface for reference are e-‐learning modules and information center links. ESG Lab believes the easy and intuitive approach of the Storwize V7000 GUI can shorten the time spent training and refreshing staff while greatly reducing the time and number of support calls for administration issues. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 9 Efficient Data Management With the Storwize V7000, the storage administrator has the ability to deploy enterprise-‐class management features to improve storage efficiency. Thin provisioning and snapshot technology are included in the Storwize V7000 code. Thin provisioning employs an abstraction layer between the physical disk drive and the storage presented to the host system. With the Storwize V7000, physical disks are configured in RAID sets as managed disks, or MDisks. The MDisks are then assigned to storage pools. Virtualized volumes are created from pool storage and presented to hosts. As shown in Figure 7, the volumes created can be larger than the physical storage. Because the volume is abstracted from the physical storage layer, capacity can be managed dynamically and transparently to the host operating system as requirements change. Figure 7. Thin Provisioning Figure 7 shows thin provisioned storage compared with traditionally provisioned storage. The left side of the figure shows the one-‐to-‐one relationship of a traditional volume with a 5TB volume presented to a host server consuming 5TB of physical space. The right side of the figure shows a 5TB virtual container being presented to a host server using only 100GB of physical space. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 10 ESG Lab Testing ESG Lab tested thin provisioning on the Storwize V7000 by oversubscribing the storage array. Thin-‐provisioned volumes were created with more capacity than the physical array, as shown in Figure 8. The Storwize V7000 had a physical capacity of 38.8TB and a used capacity of 34.0TB. ESG Lab created thin-‐provisioned volumes to present a virtual capacity of 41.5TB. Figure 8. Thin Provisioning GUI View The bar graph in Figure 8 shows the used capacity in blue, the physical capacity in black, and the virtual capacity in green. At this point in ESG Lab testing, the Storwize V7000 had presented more capacity to host servers than it physically contained, yet the used capacity was only 34.0TB. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 11 FlashCopy is a copy service provided with the Storwize V7000 disk system. There are three FlashCopy options available in the Storwize V7000—Snapshot, Clone, and Backup—as shown in Figure 9. Implementing FlashCopy enables the instantaneous copy of data from a source volume to a target volume. Figure 9. FlashCopy Mappings The FlashCopy Snapshot is a thin-‐provisioned copy with the ability to automatically expand as necessary. The FlashCopy Clone option is a copy with the same properties as the source volume. FlashCopy Backup is a copy with the same properties as the source and the ability to create incremental copies. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 12 ESG Lab Testing ESG Lab validated snapshot functionality on the Storwize V7000 by creating a FlashCopy Clone of an existing volume that was already presented to a Windows host with an 80GB database file residing on it. Figure 10 shows the first steps for creating a FlashCopy copy volume from the FlashCopy Actions menu. Figure 10. FlashCopy Action Menu The new Clone option was selected, and mappings were created from source volume (MWL-‐JET1_01) to target volume (MWL-‐JET1) as shown in Figure 11. Figure 11. FlashCopy Mappings © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 13 When the Clone copy was fully synchronized on the Storwize V7000, the 80GB database file was deleted on the Windows host. After the file deletion, the source and target mapping were reversed on the Storwize V7000. The Windows host system was rebooted and the 80GB database file was immediately available on the host, while the volume synchronization process ran in the background (see Figure 12). Figure 12. FlashCopy Windows Host View Why This Matters The ability to respond quickly to new application storage requirements while providing reliable application access relates directly to revenue generation: Lost application access and slow provisioning practices can have a major negative impact on an organization’s finances. ESG believes that thin provisioning and snapshot technology are two of the most useful functions of a storage system. Thin provisioning simplifies the cumbersome task of storage provisioning and improves capacity utilization. Snapshot technology improves availability and application access. With a wizard-‐driven configuration process and advanced management capabilities, ESG Lab testing has confirmed that Storwize V7000 thin provisioning can be used to reduce the cost and complexity of storage provisioning while providing significant capacity savings as FlashCopy snapshots can be leveraged to improve availability. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 14 Powerful Enterprise-‐class Features The Storwize V7000 disk system is a feature-‐rich storage solution that provides a powerful set of management tools enabling great flexibility while helping to make the most challenging storage administration tasks easy to tackle. As shown previously in Figure 5, both internal and external storage can be virtualized and managed via the Storwize V7000 graphical user interface. The GUI provides an easy-‐to-‐use management console and includes configuration wizards for many administration tasks. The ability to combine multiple storage concepts, such as external storage device imports and thin provisioning, add to the power of the Storwize V7000, creating flexible capacity management. ESG Lab Testing ESG Lab tested and confirmed the ability to virtualize external storage devices by importing, presenting, and managing a DS4800 volume and its associated data via the Storwize V7000 system. As shown in Figure 13, a DS4800 volume was imported to the Storwize V7000, combined with a thin-‐provisioned internal volume, and presented to a host server with multiple virtual Windows machines. Figure 13. Virtualizing External Storage with the IBM Storwize V7000 The volume import procedure was conducted and configured using the Storwize V7000 Import Wizard. The wizard made the import procedure easy and intuitive by providing descriptions and configuration options during the short, two-‐step setup process. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 15 The Import Wizard is just one of the administration wizards that can be launched from the Storwize V7000 GUI. As shown in Figure 14, the Import Wizard was used to import a volume and its data from an external DS4800 storage array. Figure 14. Import Wizard—Step 1 of 2 Figure 15 shows the pool selection screen—the second and final step of the volume-‐import process. Figure 15. Import Wizard—Step 2 of 2 The original volume data was maintained during the import process and once imported, presented back to the original Windows machine via the Storwize V7000. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 16 Upon completion of the import process, a thin-‐provisioned volume (Copy 1) was added to the original imported volume (see Figure 16). Figure 16. Thin-‐provisioned Copy 1 Figure 16 shows the traditionally provisioned Copy 0 volume and the thin-‐provisioned Copy 1 volume. It should be noted that each volume contained the same 8.8GB of used data. The traditional volume used 400GB of physical space to store 8.8GB, while the thin volume consumed only the 8.8GB of physical space to store the same data. Why This Matters Recent ESG research indicates that IT professionals consider data-‐growth management a high priority for 2012 and plan to invest in solutions to address this issue. When introducing new, more efficient storage technology, it is not uncommon for IT to find existing data poorly provisioned and distributed across a multitude of storage devices. The benefits of implementing an efficient storage solution can be easily gobbled up in time spent on complex migrations and investments in third-‐party migration tools. ESG Lab has confirmed that a Storwize V7000 addresses these issues through its ability to virtualize, import, and manage a wide variety of existing storage devices, enabling flexible, easy migration and efficient data provisioning. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 17 Predictably Scalable Performance IBM uses the latest hardware and field-‐proven storage software from the SVC and DS8000 storage product lines to deliver exceptional performance with the IBM Storwize V7000. The hardware platform is built for speed and scalability using a pair of highly available controllers powered by the latest Intel chipsets. Each controller is equipped with 8GB of high-‐speed cache memory. Up to eight Fibre Channel interfaces (8Gb/sec) and four iSCSI interfaces (1Gb/sec) are supported across a pair of controllers for host connectivity. A mix of SAS, Nearline SAS, and SSD drives is supported to meet a wide variety of price/performance requirements. The performance of the hardware platform is amplified by field-‐proven IBM storage software including the SVC storage virtualization engine, the DS8000 RAID stack, and Easy Tier( illustrated in Figure 18), which automatically moves frequently used data to high-‐performance SSD drives and infrequently used data to cost-‐effective Nearline SAS drives. Thousands of customers across the globe rely on the field-‐proven performance of the SVC engine at the heart of the Storwize V7000. The performance scalability of the SVC engine has been demonstrated in published Storage Performance Council (SPC) results. SPC is a vendor-‐neutral standards body designed to be a source of comparative storage subsystem performance information. Two application workloads are supported by SPC: SPC-‐1 simulates an interactive database application, and SPC-‐2 simulates a bandwidth-‐intensive application such as those that process large files, large database queries, or video on demand. When this report was originally published, IBM had the industry-‐ leading SPC-‐1 result of 380,489 IOPS with a six-‐node SVC cluster in front of two IBM DS8700 disk arrays.4 The SVC engine running inside a dual-‐controller Storwize V7000 had excellent published results of 56,510 SPC-‐1 IOPS5 and 3,123 SPC-‐2 MB/sec.6 ESG Lab Mixed-‐workload Testing ESG Lab has confirmed that the performance and scalability of the Storwize V7000 is well suited for a mix of applications running in a consolidated virtual server environment. The ESG Lab mixed-‐workload performance benchmark was designed to measure the performance capabilities of a single Storwize V7000 storage system subjected to an I/O-‐intensive mix of virtualized business applications running on a pair of IBM x3850 X5 servers in a virtual server environment powered by VMware vSphere. Taking a cue from the server-‐focused VMware VMmark benchmark, a cell concept was used during the design of this test. Each cell was composed of four applications (e-‐ mail, database, web server, backup jobs), each running in its own virtual machine. IBM System x3850 X5 servers were used to exercise up to four cells and 16 virtual applications in parallel. The Microsoft Jetstress utility was used to simulate Exchange 2010 traffic, and the Oracle Orion utility was used to emulate OLTP and OLAP database traffic. The industry-‐standard Iometer utility was used to emulate thousands of web server users and up to four backup jobs. Storwize V7000 disk capacity was used for all storage capacity including VMware virtual disk files (VMDK), Windows Server 2008 R2 operating system images, application executables, and application data. The operating system images were installed on VMDK volumes. All of the application data volumes under test were configured as mapped raw LUNs (also known as raw device mapped, or RDM, volumes). Mixed-‐workload testing was performed with a single IBM Storwize V7000 equipped with 215 SAS drives. The Exchange VMs were configured with 64 SAS drives for the database and 25 drives for logs. Oracle was configured with 52 drives, and the web server and backup workloads were configured with 32 drives each. 4 http://www.storageperformance.org/benchmark_results_files/SPC-‐1/IBM/A00087_IBM_DS8700_SVC-‐5.1-‐ 6node/a00087_IBM_DS8700_SVC5.1-‐6node_executive-‐summary-‐r1.pdf 5 http://www.storageperformance.org/benchmark_results_files/SPC-‐1/IBM/A00097_IBM_Storwize-‐V7000/a00097_IBM_Storwize-‐V7000_2-‐ node_SPC1_executive-‐summary.pdf 6 http://www.storageperformance.org/benchmark_results_files/SPC-‐2/IBM_SPC-‐2/B00052_IBM_Storwize-‐V7000/b00052_IBM_Storwize-‐ V7000_SPC2_executive-‐summary.pdf © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 18 Volume ownership was balanced across the dual controllers within the Storwize V7000 and distributed evenly over the eight host interfaces. The volumes were spread evenly over two VMware host groups with a multipath policy of most recently used (MRU). As shown in Figure 17, a single Storwize V7000 delivers the I/O processing power and bandwidth needed to simultaneously support 54,208 simulated Exchange 2010 mailboxes and 5,015 Oracle Orion small database I/Os per second and 849MB/sec of throughput for large OLAP Oracle Orion operations and 5,015 simulated web server IOPS and 644MB/sec of throughput for bandwidth-‐intensive backup jobs—all while delivering predictably fast response times. Note how the performance of the Storwize V7000 scaled well as a mix of real-‐world application workloads ran in parallel on up to 16 virtual machines running on a pair of powerful IBM x3850 X5 servers. Figure 17. Storwize V7000 Mixed-‐workload Scalability 20,000 18,000 16,000 I/Os per second (IOPS) 14,000 12,000 10,000 Exchange 8,000 Orion OLTP 6,000 Web Server 4,000 Scan/read 2,000 0 1 2 3 4 4 8 12 16 Virtual Machines © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 19 Easy Tier The solid-‐state drives (SSDs) supported by the Storwize V7000 can be used to improve application performance while reducing power and cooling requirements in the data center. Easy Tier increases the efficiency and simplicity of deploying SSD drives. Easy Tier, and its associated tool Storage Tier Advisor, help IT managers plan for, deploy, and manage the deployment of SSD drives in conjunction with traditional spinning hard drives. As shown in Figure 18, Easy Tier uses sub-‐LUN data-‐tiering technology that can be used to automatically move frequently used data to high-‐performance SSD drives and infrequently used data to Nearline drives. Easy Tier can be configured to improve performance for existing storage being virtualized by the IBM Storwize V7000 system and can operate with any combination of internal or externally virtualized SSD or HDD devices. Figure 18. IBM System Storage Easy Tier ESG Lab evaluated the performance boost that can be achieved with SSD drives and Easy Tier. Twenty-‐four SSD drives were added to the pool of SAS drives used during the first round of mixed-‐workload testing. An Easy Tier policy was configured to move frequently used application data to 24 high-‐speed SSD drives automatically. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 20 After re-‐running the mixed workload on all of the available virtual machines for 24 hours, Easy Tier more than tripled the amount of mixed workloads the solution could handle.7 Figure 19. Boosting Mixed-‐workload Performance with Easy Tier Before EasyTier Aner EasyTier 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 Mixed I/Os per second, 16 Virtual Machines At the application level, Easy Tier delivered: • 341% more web server I/Os per second • 277% more Oracle OLTP I/Os per second • 69% more Exchange 2010 users • 33% faster Exchange database read response times • 43% faster Oracle OLTP I/O response times Why This Matters ESG research indicates that storage scalability and performance are significant challenges for the growing number of organizations embracing server virtualization technology. Companies continuously face challenges in meeting the capacity and performance requirements of applications cost effectively—especially applications with strict performance requirements. Failure to meet these requirements can result in lost productivity and costly loss of services. ESG Lab confirmed that the IBM Storwize V7000 has exceptional performance as evidenced by published industry-‐ standard SPC results and ESG Lab mixed-‐workload testing in a VMware environment. ESG Lab also confirmed that a Storwize V7000 equipped with Easy Tier and SSD drives can be used to automatically increase the performance of a mix of applications running in a virtual server environment. Easy Tier and SSD drives not only reduced response times, but also dramatically increased the amount of work that the virtualized infrastructure could handle. 7 For more detail on the ESG Lab mixed-‐workload testing of the IBM Storwize V7000, see the full ESG Lab Validation Report, IBM Storwize V7000: Real-‐world Mixed Workload Performance in VMware Environments, January 2011. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 21 Real-‐time Compression The IBM Storwize V7000 includes high-‐performance, volume-‐level Real-‐time Compression, supporting active primary workloads for both internal and external virtualized storage arrays. While some compression solutions advise against compressing certain workloads such as Oracle databases, Exchange databases, and virtualized workloads, the IBM Storwize V7000 Real-‐time Compression feature has no such restrictions. By delivering 50% or more compression and adding these data types, Real-‐time Compression helps to reduce storage, data center, and energy costs. Compression is specified during volume creation, and compressed volumes are always thinly provisioned. In addition, existing volumes can be compressed using volume mirroring. Compression is performed in-‐ line, so there is no need to reserve space or manage post-‐process compression tasks. IBM offers a “Comprestimator” tool that enables customers to estimate compression benefits for their specific environments. This host-‐based tool can be used on any storage system; it efficiently scans volumes and provides an accurate compression rate for any device within about one minute. ESG Lab Testing ESG Lab started exploring the Storwize V7000 Real-‐time Compression option by connecting to the management interface and navigating through the Real-‐time Compression configuration and display options. As shown in Figure 20, storage utilization metrics can be quickly and easily viewed in the system-‐monitoring pane by selecting the compression view. This view displays virtual capacity, compressed capacity, and the capacity before compression. Real-‐time Compression is integrated seamlessly into the Storwize V7000 management GUI for all aspects of compression management—from the simple display shown in Figure 20 through volume management. Figure 20. Storwize V7000 GUI System View with Real-‐time Compression © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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Lab Validation: IBM
Storwize V7000 Disk System 22 ESG Lab used the volume detail information from the GUI to measure capacity savings before and after Real-‐time Compression for common data types that might be used in a typical Storwize V7000 storage environment. Figure 21 shows the compression savings for three data types, specifically depicting the reduction in capacity with Real-‐time Compression enabled. The data sets consist of an Oracle database, collaboration data, and virtual machine data. The collaboration data supports a file system that hosts office productivity files and applications (e.g., MS Word, MS PowerPoint, MS Excel, and other common user file types). Figure 21. The Real-‐time Compression Advantage The Real-‐Fme Compression Advantage Relafve Capacity Usage (less is beper) 100% 80% Capacity Savings 60% 40% 20% 0% Oracle Data Collaborafon Data VM Data Before Compression Aner Compression Real-‐time Compression capacity savings for different data types: • For Oracle data, Real-‐time Compression achieved 80.38% savings in capacity. • For collaboration data, Real-‐time Compression achieved 66.2% savings in capacity. • For virtual machine data, Real-‐time Compression achieved 60.18% savings in capacity. The average total savings across the three data types was 69%. © 2012 by The Enterprise Strategy Group, Inc. All Rights Reserved.
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